Definition: In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.
Input: ['t', '87', '51', '43', '9', '355', 'k', '229', 'v', '145', 'v', 'u', 'l']

1, 2, 3, 4, 5, 7, 8, 9